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Building Serverless Applications With WebAssembly & Spin
Tired of paying the "container tax" for bursty, event-driven workloads?
It's time to elevate your cloud architecture.
Building Serverless Applications with WebAssembly & Spin walks you through constructing a robust, multi-component Rust app from scratch. You will master Spin, learn about the underlying Wasm Component Model, and ship your app seamlessly to both Kubernetes and edge runtimes.
Ditch heavy base images, eliminate cold starts, and master the future of lightweight, secure serverless compute.
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About
About the Book
Are you tired of paying the cold-start latency and OS bloat tax when using containers for bursty, event-driven workloads?
Building Serverless Applications with WebAssembly & Spin is your hands-on guide to the third wave of cloud computing. This book provides a practical path to building lightweight and blazing-fast serverless applications using WebAssembly (Wasm) and Spin—the open-source framework that makes server-side Wasm genuinely accessible.
Rather than relying on disconnected "Hello, World" snippets, this book takes a comprehensive, project-based approach. You will build a end-to-end application from the ground up using Rust.
What You Will Learn:
- The Wasm Paradigm: Grasp the core concepts of server-side WebAssembly, the Wasm Component Model, and why they matter for the future of cloud compute.
- Development: Implement real requirements using the Spin SDK for Rust, Axum Serde and other common crates from the Rust ecosystem.
- Wasm Component Composition: Build and Compose reusable WebAssembly components to reduce code duplication while increasing developer productivity.
- Master Spin: Understand and Apply techniques provided by the CNCF Spin framework to get your inner loop tasks done with ease.
- The Ultimate Promise of Portability: Take your finished application and deploy it to two radically different environments—the global edge with Akamai Functions and a Kubernetes cluster via SpinKube—without rewriting or recompiling a single line of code.
Whether you are a seasoned software architect exploring the edge or a developer looking to write highly optimized Wasm applications with Rust, this book will equip you with the tools to master the next generation of cloud development.
Author
About the Author
Thorsten Hans
Thorsten Hans is a Senior Developer Advocate at Akamai, a Docker Captain, and a pioneer in the WebAssembly and cloud-native ecosystem.
With over two decades of experience architecting distributed systems, Thorsten specializes in the intersection of serverless compute, containerization, and edge acceleration. As an active practitioner in the CNCF and WebAssembly communities, he works directly with engineering teams to transition heavy, container-bound workloads into lightning-fast WebAssembly components.
Thorsten is a frequent speaker at global tech conferences, an active open-source contributor, and writes extensively on server-side Wasm, Rust, and edge architecture. When he isn't benchmarking micro-runtimes or building with Spin, you can find him sharing deep technical insights on [his blog](https://thorsten-hans.com), riding his mountain bike, and engaging with developers worldwide.
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